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9 Cards in this Set
- Front
- Back
- 3rd side (hint)
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sponges, always sessile, mostly marine colonies, pores for exchange, skeleton or spicules, little cell specialization
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Porifera
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P....
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mostly marine, 2 germs layers, radial symmetery, nerve net, motile, one mouth opening to sac-like digestive cavity, sting cells
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Cnidaria or Coelenterata
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C....
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flatworms, bilateral symmetry, one mouth opening to saclike digestive cavity, 3 germ layers, nervous system
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platyhelminthes
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P....
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roundworms, bilateral symmetery, digestive system - tubular shape with mouth and anus, no segmentation, body cavity present but poorly formed
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Nematoda
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N.....
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bilateral symmetry, usually secrete a shell, soft bodied with no appendages, unsegmented, coelem
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Mollusca
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M.....
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segmented worms, bilateral symmetry, segmentatiion, complex organ systems, some have non-jointed head appendages, coelem
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Annelida
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A.....
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bilateral symmetry, exoskeleton, jointed appendages, ventral nerve cord segmentaiton, well defined body regions, gills or trachea, open circulatory system
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Anthropoda
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A....
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all marine, larva exhibit bilateral symmetry, adults exhibit radial symmetry, spiny skin, coelem, water vascular system, body plan usually in 5 parts
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Echinodermata
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E....
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Bilaterally symmetrical, segmentation, hollow dorsal nerve cord, a notochord, and/or a series of pharyngeal gill slits
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Chordata
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C.....
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